--- /var/portage/app-misc/digitemp/digitemp-3.3.2.ebuild	2005-12-21 02:05:30.000000000 +0200
+++ digitemp-3.3.2-r1.ebuild	2006-08-27 15:06:42.000000000 +0300
@@ -6,36 +6,65 @@
 HOMEPAGE="http://www.digitemp.com http://www.ibutton.com"
 SRC_URI="http://www.digitemp.com/software/linux/${P}.tar.gz"
 
-IUSE=""
+IUSE="ds9097 ds9097u ds2490"
 SLOT="0"
 LICENSE="GPL-2"
 KEYWORDS="~x86"
 
-DEPEND="virtual/libc"
+DEPEND="virtual/libc
+	ds2490? ( >=dev-libs/libusb-0.1.10a )"
 
 exampledir="/usr/share/doc/${PF}"
 
 src_compile() {
-	target="ds9097u"
-	# default is to compile to the ds9097u. local use flag takes care of
-	# passive ds9097. the ds9097u setting is what i have, so probably a safe
-	# default - nothing special here.
-	[ "${SERIAL_DRIVER}" = ds9097 ] && target="ds9097"
-	make clean
-
-	ewarn ""
-	ewarn "making for ${target} serial controller. if you would like support"
-	ewarn "for another controller, please set SERIAL_DRIVER=\"ds9097u\" or"
-	ewarn "SERIAL_DRIVER=\"ds9097\" as appropriate"
-	ewarn ""
-
-	make LOCK="no" ${target} || die
+	# liblockdev is not available
+	mymakeflags="LOCK=\"no\""
+	
+	# default is to compile to the ds9097u. 
+	if ! ( use ds9097 || use ds9097u || use ds2490 ); then
+		ewarn "By default using the ds9097u serial adapter. See USE flags."
+		emake clean
+		emake $mymakeflags ds9097u || die "emake default target failed"
+		return
+	fi
+	
+	if use ds9097; then
+		emake clean
+		emake $mymakeflags ds9097 || die "emake target ds9097 failed"
+	fi
+
+	if use ds9097u; then
+		emake clean
+		emake $mymakeflags ds9097u || die "emake target ds9097u failed"
+	fi
+
+	if use ds2490; then
+		emake clean
+		emake $mymakeflags ds2490 || die "emake targe ds2490 failed"
+	fi
 }
 
 src_install() {
-	target_upper="$(echo $target | tr '[:lower:]' '[:upper:]')"
-	mv digitemp_${target_upper} digitemp
-	dobin digitemp || die
+	if ! ( use ds9097 || use ds9097u || use ds2490 ); then
+		dobin digitemp_DS9097U && \
+			dosym digitemp_DS9097U /usr/bin/digitemp
+	else
+		use ds9097 && dobin digitemp_DS9097
+		use ds9097u && dobin digitemp_DS9097U
+		use ds2490 && dobin digitemp_DS2490
+	fi
+
+	# If there are multiple targets, make 'digitemp'
+	# symlink to one of them. This takes care if someone
+	# wants only one target.
+	if use ds2490; then
+		dosym digitemp_DS2490 /usr/bin/digitemp
+	elif use ds9097u; then
+		dosym digitemp_DS9097U /usr/bin/digitemp
+	elif use ds9097; then
+		dosym digitemp_DS9097 /usr/bin/digitemp
+	fi
+	
 	dodoc README FAQ TODO
 
 	# method one: don't treat the examples as docs; place them somewhere else.
@@ -54,8 +83,6 @@
 }
 
 pkg_postinst() {
-	ewarn "set the SERIAL_DRIVER environment variable to ds9097 to build"
-	ewarn "for that controller instead"
 	einfo ""
 	einfo "examples of using digitemp with python, perl, and rrdtool are"
 	einfo "located in ${exampledir}"